2 - 24
Adjustment
2
3
2.25 Position of bobbin case opener
Requirement
When bobbin case opener
33
33
3 is in its far left position
1. the front edge of its finger must be
0.6 mm0.6 mm
0.6 mm0.6 mm
0.6 mm behind the front edge of bobbin case trip
77
77
7;
2. hook base
66
66
6 must be pushed back from position finger
88
88
8 by
0.3 mm0.3 mm
0.3 mm0.3 mm
0.3 mm and screw
11
11
1 must
rest on stop pin
55
55
5.
● Loosen screws 1 and 2 so that bobbin case opener 3
is just movable.
● Adjust bobbin case opener 3 according to Requirements 1 and
2.
● Tighten screw 2.
● Move fixing collar 4 up against bobbin case opener 3
and stop pin 5 and tighten screw 1.
1
5
Fig. 2 - 23
3
6
8
0,3 mm
2
4
7
3
0,6 mm
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